I have also encountered this issue. Also Telegram (flatpak) and GIMP applications have no border/shadow, and I couldn't resize windows by dragging the border. Log out and log in again fixes it, but after restarting the system it's broken again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064177 Title: Window borders and shadows missing from GTK3 dialogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2064177/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
